JPS5471618A - Electro-acoustic transducer - Google Patents
Electro-acoustic transducerInfo
- Publication number
- JPS5471618A JPS5471618A JP13876477A JP13876477A JPS5471618A JP S5471618 A JPS5471618 A JP S5471618A JP 13876477 A JP13876477 A JP 13876477A JP 13876477 A JP13876477 A JP 13876477A JP S5471618 A JPS5471618 A JP S5471618A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- diaphragm
- case
- spacing
- alternating currents
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
PURPOSE:To obtain a transducer which causes less parasitic vibrations, resonates at low frequencies and is able to provide large amplitudes by constituting a d.c. magnetic field and providing a balance in space to the diaphragm without using any mechanical elastic material. CONSTITUTION:Another magnet 3 has been secured on the bottom inside of a case, and a reducing valve 6 is provided near the bottom of the case. Since an 0-ring gasket hardly hampers the piston motion of a diaphragm 1, the diaphragm assembly is attracted to the case side and the intermagnet spacing (d) becomes smaller, blancing at the spacing D. When alternating currents are flowed to a signal winding 4, an AC magnetic field is generated and this magnetic field is increased or decreaseed by superposing the DC magnetic field of a magnet 3'. As a result, vibrations according to the alternating currents are induced and sound waves are radiated from the outside surface of the diaphragm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13876477A JPS5471618A (en) | 1977-11-17 | 1977-11-17 | Electro-acoustic transducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13876477A JPS5471618A (en) | 1977-11-17 | 1977-11-17 | Electro-acoustic transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5471618A true JPS5471618A (en) | 1979-06-08 |
JPS6247040B2 JPS6247040B2 (en) | 1987-10-06 |
Family
ID=15229633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13876477A Granted JPS5471618A (en) | 1977-11-17 | 1977-11-17 | Electro-acoustic transducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5471618A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4711485U (en) * | 1971-03-03 | 1972-10-11 | ||
JPS49122840U (en) * | 1973-02-14 | 1974-10-21 |
-
1977
- 1977-11-17 JP JP13876477A patent/JPS5471618A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4711485U (en) * | 1971-03-03 | 1972-10-11 | ||
JPS49122840U (en) * | 1973-02-14 | 1974-10-21 |
Also Published As
Publication number | Publication date |
---|---|
JPS6247040B2 (en) | 1987-10-06 |
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